Heat grill to medium-high and spray 4 sheets of aluminum foil with cooking spray. In a large bowl, combine ground beef, Worcestershire, and garlic powder and season with salt and pepper. Form into four patties.

Place each patty on a sheet of aluminum foil with frozen fries. Fold up foil packs.

Grill 10 minutes, then open foil packs and top patties with cheddar. Cover grill to let melt, 2 minutes.

Top burgers with pickles and tomatoes and drizzle with ketchup and mustard.

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